77500939464 has 96 divisors (see below), whose sum is σ = 239341185720. Its totient is φ = 22443706368.

The previous prime is 77500939391. The next prime is 77500939469. The reversal of 77500939464 is 46493900577.

It is a happy number.

77500939464 is a `hidden beast` number, since 7 + 7 + 500 + 93 + 9 + 46 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 57097102500 + 20403836964 = 238950^2 + 142842^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77500939464.

It is not an unprimeable number, because it can be changed into a prime (77500939469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2419387 + ... + 2451210.

Almost surely, 2^77500939464 is an apocalyptic number.

It is an amenable number.

77500939464 is an abundant number, since it is smaller than the sum of its proper divisors (161840246256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77500939464 is a wasteful number, since it uses less digits than its factorization.

77500939464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870639 (or 4870632 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 77500939464 in words is "seventy-seven billion, five hundred million, nine hundred thirty-nine thousand, four hundred sixty-four".